GB No. 51056
CAS No. 7757-79-1
Molecular Formula KNO3
colorless and transparent ramps or three trigonal system of white powder or granules; the boiling point of 400 ° C / decomposition; the temperature of 334 ° C; solubility : soluble in water, soluble in ethanol, ethyl ether; density : relative density (water = 1) 2.11; Stability : stability; risk Marker 11 (oxidizer); the main purposes : used in the manufacture of tobacco, gunpowder, matches, medicine, and the glass industry
2. The impact on the environment :
a health hazard
pathways : inhaled, ingested, percutaneous absorption.
health hazard : inhalation of dust on the goods respiratory irritant, high concentrations of inhaled can cause pulmonary edema. Lead exposure can play metahemoglobin affect blood oxygen-carrying capacity, headache, dizziness, cyanosis, nausea, and vomiting. Caused severe respiratory disorders, collapse or even death. Oral cause severe abdominal pain, vomiting, bloody eyes and a strong irritant. Even burns. Repeated contact with the skin dry skin, rhagadia and rashes.
two, toxicology information and environmental behavior
acute toxicity : LD503750mg/kg (rat oral)
irritation : a rabbit eyes : 100 mg (24 hours), moderate stimulus. Rabbit Skin : 500mg/24 hour, a mild irritant.
hazardous characteristics : strong oxidants. Fuel fire case, will contribute to the fire. With organic, reductant, combustibles such as sulfur, phosphorus and other contacts or mixed combustion caused when the risk of explosion. Combustion decomposition and emit toxic nitrogen oxides. By heat decomposition, produce toxic nitrogen oxides.
combustion (decomposition) products : nitrogen oxides.
3. Emergency Monitoring Methods :
water rapid colorimetric tube (Japan system, nitrate)
4. Laboratory monitoring methods : acid
phenol two spectrophotometry (GB7480-87, Water) (nitrate)
ion chromatography (GB13580.5-92, Water) (nitrate)
colorimetry "food additive analysis methods," such as Ma Jiaxiang translated
5. Environmental standards :
China (GB5749-85) drinking water standard 20 mg / L (nitrate, N dollars)
China (GB/T14848-93) groundwater quality standards (mg / L) Class I 2.0; Type II 5.0; Class III 20; class IV 30; category V 30 above (nitrate, N dollars)
China (GHZB1-1999), surface water quality standard ( mg / L) Class I 10; Class II 10; Class III 20; class IV 20; category V 25 (nitrate, N dollars)
the former Soviet Union (1975) sewage discharge standards 60mg / L
6. Emergency treatment and disposal methods :
a leakage contingency
isolation leak contaminated areas, restricting access. Recommended emergency personnel wearing self-absorption filter respirators, to wear protective clothing. Do not direct contact with leakage. Rendering leakage with organic matter, reducing agents, flammable contact. A small leak : rinse with plenty of water, diluted Add Water Wastewater System. Large Leak : plastic sheeting, canvas cover and reduce dispersion. The collection then shipped to recycling or waste disposal sites.
two protective measures
respiratory protection : its possible exposure to dust, it is recommended to wear headgear electric powered air-purifying respirators and dust.
eye protection : Respiratory Protection has been protective.
physical protection : Polyethylene wear protective clothing.
hand protection : Wear rubber gloves.
other : work site prohibit smoking, eating and drinking. Work to complete, take a shower. To maintain good health habits.
three, and emergency measures
contact with the skin : immediately stripped of contaminated clothing, with a large number of mobile wash, at least 15 minutes.
eye contact : immediately filed eyelid, with a large number of mobile water or saline thoroughly washed at least 15 minutes. Medical treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. If breathing stop immediately mouth. Medical treatment. Fresh into
: oral intake of water were found to blues or egg white. Medical treatment.
fire fighting methods : firefighters are required to wear gas masks, body wear firefighting suits. Mist with water, sand fire. Do not flow directly from radio to melt, to avoid serious fire or the flow causes intense boiling splash.
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